US20120312043A1 - Heat pump and control method thereof - Google Patents

Heat pump and control method thereof Download PDF

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Publication number
US20120312043A1
US20120312043A1 US13/488,798 US201213488798A US2012312043A1 US 20120312043 A1 US20120312043 A1 US 20120312043A1 US 201213488798 A US201213488798 A US 201213488798A US 2012312043 A1 US2012312043 A1 US 2012312043A1
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United States
Prior art keywords
heat
refrigerant
heat exchanger
solar
connection pipe
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Abandoned
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US13/488,798
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English (en)
Inventor
Rock Hee KIM
Tae Hun Lim
Chang Soo LIM
Young Chal PARK
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, ROCK HEE, LIM, CHANG SOO, LIM, TAE HUN, PARK, YOUNG CHAL
Publication of US20120312043A1 publication Critical patent/US20120312043A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F24D11/0221—Central heating systems using heat accumulated in storage masses using heat pumps water heating system combined with solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1078—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water the system uses a heat pump and solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
    • F25B27/005—Machines, plants or systems, using particular sources of energy using solar energy in compression type systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/12—Heat pump
    • F24D2200/123—Compression type heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/14—Solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0235—Three-way-valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/04—Sensors
    • F24D2220/042—Temperature sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

Definitions

  • Embodiments of the present disclosure relate to a heat pump that performs heat exchange between external air and solar heat to produce hot water and a control method thereof.
  • a heat pump is an apparatus that absorbs low-temperature heat to produce high-temperature heat. That is, the heat pump transfers thermal energy from one location at a lower temperature to another location at a higher temperature.
  • the heat pump performs cooling and heating or hot water supply using heat generated and collected during a circulation process, including compression, condensation and evaporation, of a refrigerant.
  • a heat pump includes a solar heat collector, a compressor to compress a refrigerant, a first heat exchanger to condense the refrigerant compressed by the compressor and to perform heat exchange between the condensed refrigerant and water, a second heat exchanger to perform heat exchange between the refrigerant having passed through the first heat exchanger and heat collected by the solar heat collector, a third heat exchanger to perform heat exchange between the refrigerant having passed through the first heat exchanger and external air, and a first flow channel switching valve to allow the refrigerant having passed through the first heat exchanger to selectively flow to the second heat exchanger or the third heat exchanger therethrough.
  • the third heat exchanger may evaporate the refrigerant having passed through the first heat exchanger and perform heat exchange between the evaporated refrigerant and the external air.
  • the heat pump may further include a hot water supply device to heat water supplied from an external water supply source so as to supply hot water
  • the hot water supply device may include a water storage unit to store the water supplied from the external water supply source and a first heating pipe to heat the water stored in the water storage unit using the heat collected by the solar heat collector.
  • One end of the first heating pipe may be configured in the form of a coil surrounding an outer circumference of the water storage unit.
  • the heat pump may further include a fourth heat exchanger to perform heat exchange between water flowing in the first heating pipe and the heat collected by the solar heat collector.
  • the heat pump may further include a first connection pipe to connect an inlet side of the solar heat collector and an outlet side of the second heat exchanger, a second connection pipe to connect an outlet side of the solar heat collector and an inlet side of the second heat exchanger, and a second flow channel switching valve disposed on the second connection pipe to allow the refrigerant flowing in the second connection pipe to selectively flow to the second heat exchanger or the fourth heat exchanger therethrough.
  • the heat pump may further include a first connection pipe to connect an inlet side of the solar heat collector and an outlet side of the second heat exchanger and a second connection pipe to connect an outlet side of the solar heat collector and an inlet side of the second heat exchanger, wherein the first heating pipe may directly communicate with the first connection pipe and the second connection pipe.
  • the heat pump may further include a second flow channel switching valve disposed on the second connection pipe to allow the refrigerant flowing in the second connection pipe to selectively flow to the second heat exchanger or the first heating pipe therethrough.
  • the hot water supply device may further include a second heating pipe to heat the water stored in the water storage unit using heat generated when the refrigerant is condensed by the first heat exchanger.
  • One end of the second heating pipe may be configured in the form of a coil surrounding an outer circumference of the water storage unit.
  • a heat pump includes a solar heat collector, an outdoor unit having a compressor to compress a refrigerant and an evaporator to evaporate the refrigerant and perform heat exchange between the evaporated refrigerant and external air, a hydro unit to condense the refrigerant compressed by the compressor and to perform heat exchange between the condensed refrigerant and water, and a hybrid unit including a first solar heat exchanger to perform heat exchange between the refrigerant having passed through the hydro unit and heat collected by the solar heat collector and a first flow channel switching valve to allow the refrigerant having passed through the hydro unit to be selectively heat-exchanged by the evaporator or the first solar heat exchanger.
  • the first flow channel switching valve may perform switching between flow channels so that the refrigerant having passed through the hydro unit is guided to the first solar heat exchanger and is heat-exchanged with the heat collected by the solar heat collector when temperature of external air around the outdoor unit is below zero and switching between flow channels so that the refrigerant having passed through the hydro unit is guided to the evaporator and is heat-exchanged with the external air when temperature of external air around the outdoor unit is above zero.
  • the heat pump may further include a hot water supply device to heat water supplied from an external water supply source so as to supply hot water
  • the hot water supply device may include a water storage unit to store the water supplied from the external water supply source and a first heating pipe to heat the water stored in the water storage unit using the heat collected by the solar heat collector.
  • the hybrid unit may further include a second solar heat exchanger to perform heat exchange between water flowing in the first heating pipe and the heat collected by the solar heat collector.
  • the hybrid unit may further include a first connection pipe to connect an inlet side of the solar heat collector and an outlet side of the first solar heat exchanger, a second connection pipe to connect an outlet side of the solar heat collector and an inlet side of the first solar heat exchanger, and a second flow channel switching valve disposed on the second connection pipe to allow the refrigerant flowing in the second connection pipe to selectively flow to the first solar heat exchanger or the second solar heat exchanger therethrough.
  • the first flow channel switching valve may perform switching between flow channels so that the refrigerant having passed through the hydro unit is guided to the first solar heat exchanger and is heat-exchanged with the refrigerant having passed through the second connection pipe when temperature of external air around the outdoor unit is below zero or when temperature of the refrigerant in the second connection pipe is higher than the temperature of the external air around the outdoor unit and the temperature of the refrigerant in the second connection pipe is equal to or higher than 5° C. and lower than 40° C. and switching between flow channels so that the refrigerant having passed through the hydro unit is guided to the evaporator and is heat-exchanged with the external air when the temperature of the refrigerant in the second connection pipe is equal to or higher than 40° C.
  • the second flow channel switching valve may perform switching between flow channels so that the refrigerant having passed through the second connection pipe is guided to the first solar heat exchanger and is heat-exchanged with the refrigerant having passed through the hydro unit when the refrigerant condensed by the hydro unit is introduced into the first solar heat exchanger via the first flow channel switching valve and switching between flow channels so that the refrigerant having passed through the second connection pipe is guided to the second solar heat exchanger and is heat-exchanged with the water flowing in the first heating pipe when the refrigerant condensed by the hydro unit is introduced into the evaporator via the first flow channel switching valve.
  • the hybrid unit may further include a first connection pipe to connect an inlet side of the solar heat collector and an outlet side of the second heat exchanger and a second connection pipe to connect an outlet side of the solar heat collector and an inlet side of the second heat exchanger, wherein the first heating pipe may directly communicate with the first connection pipe and the second connection pipe.
  • the hybrid unit may further include a second flow channel switching valve disposed on the second connection pipe to allow the refrigerant flowing in the second connection pipe to selectively flow to the first solar heat exchanger or the first heating pipe therethrough.
  • the hot water supply device may further include a second heating pipe to heat the water stored in the water storage unit using heat generated when the refrigerant is condensed by the hydro unit.
  • a heat pump includes a solar heat collector, a compressor to compress a refrigerant, a condenser to condense the refrigerant compressed by the compressor and to perform heat exchange between the condensed refrigerant and water, a solar heat exchanger to perform heat exchange between the refrigerant condensed by the condenser and heat collected by the solar heat collector so that the refrigerant is evaporated, and an evaporator to perform heat exchange between the refrigerant condensed by the condenser and external air so that the refrigerant is evaporated, wherein the refrigerant condensed by the condenser is evaporated by the solar heat exchanger or the evaporator based on an amount of heat collected by the solar heat collector or temperature of external air around the evaporator.
  • a heat pump includes a solar heat collector, a compressor to compress a refrigerant, a first heat exchanger to condense the refrigerant compressed by the compressor and to perform heat exchange between the condensed refrigerant and water, a second heat exchanger to perform heat exchange between the refrigerant having passed through the first heat exchanger and heat collected by the solar heat collector, and a third heat exchanger connected in parallel to the second heat exchanger to perform heat exchange between the refrigerant having passed through the first heat exchanger and external air.
  • the refrigerant condensed by the first heat exchanger may be heat-exchanged by the second heat exchanger or the third heat exchanger based on an amount of heat collected by the solar heat collector or temperature of the external air.
  • the heat pump may further include a hot water supply device including a water storage unit to store water supplied from an external water supply source and a heating pipe to heat the water stored in the water storage unit using the heat collected by the solar heat collector and a fourth heat exchanger connected in parallel to the third heat exchanger to perform heat exchange between water flowing in the heating pipe and the heat collected by the solar heat collector.
  • a hot water supply device including a water storage unit to store water supplied from an external water supply source and a heating pipe to heat the water stored in the water storage unit using the heat collected by the solar heat collector and a fourth heat exchanger connected in parallel to the third heat exchanger to perform heat exchange between water flowing in the heating pipe and the heat collected by the solar heat collector.
  • the refrigerant having absorbed solar heat from the solar heat collector may be heat-exchanged by the second heat'exchanger or the fourth heat exchanger based on an amount of heat collected by the solar heat collector or temperature of the external air.
  • FIG. 1 is a view showing the construction of a heat pump according to an embodiment of the present disclosure
  • FIG. 2 is a view showing that solar heat is used as an evaporation heat source of a refrigerant through a second heat exchanger (first solar heat exchanger);
  • FIG. 3 is a view showing that external air is used as an evaporation heat source of a refrigerant through a third heat exchanger (evaporator);
  • FIG. 4 is a flow chart showing a control method of a heat pump according to an embodiment of the present disclosure.
  • FIG. 5 is a view showing the construction of a heat pump according to another embodiment of the present disclosure.
  • FIG. 1 is a view showing the construction of a heat pump 100 according to an embodiment of the present disclosure.
  • the heat pump 100 includes a solar heat collector 10 to collect solar radiant heat, a hydro unit 20 to perform heat exchange between a refrigerant and water, an outdoor unit 30 to compress the refrigerant and to perform heat exchange between the refrigerant and external air, a hybrid unit 40 to perform heat exchange between the refrigerant and the heat collected by the solar heat collector 10 , and a hot water supply device 60 to supply hot water.
  • a solar heat collector 10 to collect solar radiant heat
  • a hydro unit 20 to perform heat exchange between a refrigerant and water
  • an outdoor unit 30 to compress the refrigerant and to perform heat exchange between the refrigerant and external air
  • a hybrid unit 40 to perform heat exchange between the refrigerant and the heat collected by the solar heat collector 10
  • a hot water supply device 60 to supply hot water.
  • the solar heat collector 10 converts radiant energy contained in sunlight into heat.
  • the solar heat collector 10 is configured to have a structure in which a black titanium-coated heat collection plate is disposed in a plate-shaped aluminum case in a state in which the heat collection plate is covered by a transparent cover layer (tempered glass or plastic) to transfer sunlight, and a heat insulation member is disposed between the titanium-coated heat collection plate and the aluminum case.
  • a heat medium pipe 13 is arranged between the transparent cover layer and the titanium-coated heat collection plate along the titanium-coated heat collection plate in a zigzag fashion to absorb the solar radiant heat accumulated in the solar heat collector 10 while a heat medium is circulated along the heat medium pipe 13 by a circulation pump 14 .
  • Water or an antifreeze solution may be used as a heat medium to absorb solar radiant heat.
  • a first connection pipe 11 is connected to an inlet side of the solar heat collector 10
  • a second connection pipe 12 is connected to an outlet side of the solar heat collector 10
  • the first connection pipe 11 , the second connection pipe 12 , and the heat medium pipe 13 communicate with each other.
  • the heat medium, introduced into the solar heat collector 10 through the first connection pipe 11 absorbs solar radiant heat while flowing in the heat medium pipe 13 , and is discharged from the solar heat collector 10 through the second connection pipe 12 .
  • the heat medium discharged from the solar heat collector 10 through the second connection pipe 12 is introduced into a second heat exchanger 42 and used as an evaporation heat source to evaporate a refrigerant, which will be described below.
  • the hydro unit 20 includes a first heat exchanger 21 .
  • the first heat exchanger 21 condenses a refrigerant compressed by a compressor 31 included in the outdoor unit 30 to perform heat exchange between the refrigerant and water.
  • Condensation heat generated when the refrigerant flowing along a refrigerant pipe 24 in the first heat exchanger 21 is condensed, is transferred to water flowing along a water pipe 26 .
  • the water, heated by the condensation heat may be supplied to the hot water supply device 60 for hot water supply or may be stored in a water tank 80 and supplied to a radiator 82 , a convector 84 or a heating coil 86 for heating as needed, which will be described below.
  • the outdoor unit 30 includes a compressor 31 , an accumulator 32 , a third heat exchanger 33 , a four-way valve 34 , and a first expansion valve 35 .
  • the compressor 31 functions as a pump to circulate a refrigerant.
  • the compressor 31 suctions a low-temperature, low-pressure gas refrigerant, evaporated by the third heat exchanger 33 , and increases the pressure of the gas refrigerant to saturation pressure corresponding to condensation temperature so that the gas refrigerant is condensed while passing through the first heat exchanger 21 .
  • the accumulator 32 causes a liquid refrigerant, not evaporated by the third heat exchanger 33 , to be evaporated and introduced into the compressor 31 .
  • the third heat exchanger 33 causes a low-temperature, low-pressure liquid refrigerant, passing through the expansion valve 35 , to collect heat from external air while being evaporated through heat exchange with the external air. That is, the third heat exchanger 33 functions as an evaporator to evaporate a refrigerant using external air as an evaporation heat source.
  • the four-way valve 34 causes a refrigerant, evaporated by the third heat exchanger 33 , to be introduced into the compressor 31 or a liquid refrigerant, not evaporated by the third heat exchanger 33 , to be introduced into the accumulator 32 , and a refrigerant, compressed by the compressor 31 , to be introduced into the first heat exchanger 21 .
  • the first expansion valve 35 expands a high-temperature, high-pressure liquid refrigerant, condensed and liquefied by the first heat exchanger 21 , into a low-temperature, low-pressure refrigerant so that the refrigerant is evaporated by the third heat exchanger 33 .
  • the hybrid unit 40 includes a second heat exchanger 42 , a fourth heat exchanger 44 , a second expansion valve 47 , a pump 48 , a first flow channel switching valve 45 disposed between the first heat exchanger 21 and the second heat exchanger 42 or between the first heat exchanger 21 and the third heat exchanger 33 to perform switching between flow channels, and a second flow channel switching valve 46 disposed on the second connection pipe 12 connected to the second heat exchanger 42 to perform switching between flow channels.
  • the second heat exchanger 42 performs heat exchange between a liquid refrigerant, condensed by the first heat exchanger 21 included in the hydro unit 20 , and heat collected by the solar heat collector 10 to evaporate the refrigerant.
  • the fourth heat exchanger 44 is configured to supply heat for hot water supply to the hot water supply device 60 .
  • the fourth heat exchanger 44 performs heat exchange between a heat medium, introduced through the second flow channel switching valve 46 disposed on the second connection pipe 12 , and water, flowing in a first heating pipe 61 included in the hot water supply device 60 so that heat from the heat medium is transferred to the water flowing in the first heating pipe 61 .
  • both the second heat exchanger 42 and the fourth heat exchanger 44 are configured to transfer heat collected by the solar heat collector 10 to a refrigerant or water. Consequently, the second heat exchanger 42 and the fourth heat exchanger 44 may be a first solar heat exchanger and a second solar heat exchanger, respectively.
  • the first flow channel switching valve 45 is disposed between the first heat exchanger 21 and the second heat exchanger 42 or between the first heat exchanger 21 and the third heat exchanger 33 to allow a refrigerant, condensed by the first heat exchanger 21 , to be selectively introduced into the second heat exchanger 42 or the third heat exchanger 33 so that heat exchange is performed.
  • the first flow channel switching valve 45 performs switching between flow channels so that a refrigerant is introduced into the second heat exchanger 42 or the third heat exchanger 33 based on the amount of heat collected by the solar heat collector 10 or the temperature of external air around the third heat exchanger 33 , which will be described below in detail.
  • the second flow channel switching valve 46 is disposed on the second connection pipe 12 connected to the second heat exchanger 42 to allow a heat medium, flowing along the second connection pipe 12 , to be selectively introduced into the second heat exchanger 42 or the fourth heat exchanger 44 so that heat exchange is performed.
  • the second flow channel switching valve 46 performs switching between flow channels so that a refrigerant is introduced into the second heat exchanger 42 or the fourth heat exchanger 44 based on the amount of heat collected by the solar heat collector 10 or the temperature of external air around the third heat exchanger 33 , which will be described below in detail.
  • an electronic or mechanical valve which is classified depending upon a drive method, or a three-way valve or a four-way valve, which is classified depending upon the number of flow channels, may be used as the first flow channel switching valve 45 and the second flow channel switching valve 46 .
  • the second expansion valve 47 expands a high-temperature, high-pressure liquid refrigerant, condensed and liquefied by the first heat exchanger 21 , into a low-temperature, low-pressure refrigerant so that the refrigerant is evaporated by the second heat exchanger 42 .
  • At the first connection pipe 11 and the second connection pipe 12 may be provided temperature sensors 49 a and 49 b to measure temperature T OUT of a heat medium discharged from the outlet side of second heat exchanger 42 and temperature T IN of a heat medium introduced into the inlet side of second heat exchanger 42 , respectively.
  • the hot water supply device 60 includes a water storage unit 64 , a first heating pipe 61 , and a second heating pipe 62 .
  • the water storage unit 64 stores water supplied from an external water supply source.
  • the first heating pipe 61 has one end located at the fourth heat exchanger 44 so that heat exchange is performed between water flowing in the first heating pipe 61 via pump 48 and a heat medium introduced into the fourth heat exchanger 44 and the other end in contact with the outer circumference of the water storage unit 64 to supply heat to water stored in the water storage unit 64 .
  • the second heating pipe 62 has one end connected to the water tank 80 and the other end in contact with the outer circumference of the water storage unit 64 to supply heat to water stored in the water storage unit 64 .
  • the ends of the first heating pipe 61 and the second heating pipe 62 contacting the water storage unit 64 may be configured in the form of a coil surrounding the outer circumference of the water storage unit 64 to improve heat transfer efficiency.
  • FIG. 2 is a view showing that solar heat is used as an evaporation heat source of a refrigerant through the second heat exchanger (first solar heat exchanger)
  • FIG. 3 is a view showing that external air is used as an evaporation heat source of a refrigerant through the third heat exchanger (evaporator)
  • FIG. 4 is a flow chart showing a control method of a heat pump according to an embodiment of the present disclosure.
  • a high-temperature, high-pressure liquid refrigerant compressed by the compressor 31 of the outdoor unit 30 , is introduced into the first heat exchanger 21 of the hydro unit via the four-way valve 34 and is condensed by the first heat exchanger 21 .
  • Condensation heat generated when the refrigerant is condensed is transferred to water flowing along the water pipe 26 in the first heat exchanger 21 .
  • the water, heated by the condensation heat is introduced into the hot water supply device 60 via the second heating pipe 62 or is stored in the water tank 80 and introduced to the radiator 82 , the convector 84 or the heating coil 86 .
  • the refrigerant, condensed by the first heat exchanger 21 , is introduced into the second heat exchanger 42 or the third heat exchanger 33 via the first flow channel switching valve 45 based on the amount of heat collected by the solar heat collector 10 or the temperature of external air around the third heat exchanger 33 , and is evaporated by the second heat exchanger 42 or the third heat exchanger 33 .
  • the refrigerant, condensed by the first heat exchanger 21 is introduced into the second heat exchanger 42 and performs heat exchange with the heat medium flowing along the second connection pipe 12 , with the result that the refrigerant is evaporated.
  • the refrigerant, condensed by the first heat exchanger 21 is introduced into the third heat exchanger 33 and performs heat exchange with external air, with the result that the refrigerant is evaporated. That is, when the temperature of the external air around the third heat exchanger 33 is very low, for example in winter, it may be difficult to collect evaporation heat to evaporate the refrigerant through the third heat exchanger 33 or collection efficiency is very low.
  • low-temperature solar radiant heat collected by the solar heat collector 10 through the second heat exchanger 42 instead of the third heat exchanger 33 is used as an evaporation heat source so that the refrigerant is evaporated, thereby improving overall efficiency of the heat pump 100 .
  • the third heat exchanger 33 is not used but the second heat exchanger 42 is used. Consequently, a defrost operation to prevent the third heat exchanger 33 from being frosted or frozen to burst may be needed.
  • a heat medium absorbing solar radiant heat collected by the solar heat collector 10 and introduced into the second connection pipe 12 , is introduced into the second heat exchanger 42 or the fourth heat exchanger 44 via the second flow channel switching valve 46 to provide the solar radiant heat.
  • the refrigerant, condensed by the first heat exchanger 21 when the refrigerant, condensed by the first heat exchanger 21 , is introduced into the second heat exchanger 42 via the first flow channel switching valve 45 , the heat medium, passing through the second connection pipe 12 , is introduced into the second heat exchanger 42 via the second flow channel switching valve 46 to provide evaporation heat during heat exchange with the refrigerant.
  • the refrigerant, condensed by the first heat exchanger 21 is introduced into the third heat exchanger 33 via the first flow channel switching valve 45
  • the heat medium, passing through the second connection pipe 12 is introduced into the fourth heat exchanger 44 via the second flow channel switching valve 46 to provide heat for hot water supply during heat exchange with the water flowing in the first heating pipe 61 .
  • the gas refrigerant, evaporated by the second heat exchanger 42 or the third heat exchanger 33 , is introduced into the compressor 31 or the accumulator 32 via the four-way valve 34 and is repeatedly condensed, expanded and evaporated.
  • the heat pump 100 When the temperature T IN of the heat medium flowing in the second connection pipe 12 is 40° C. or higher, the heat pump 100 is operated in a normal mode in which the refrigerant, condensed by the first heat exchanger 21 , is introduced into the third heat exchanger 33 , where the refrigerant is evaporated through heat exchange with the external air (S 600 ).
  • the heat pump 100 is operated in a hybrid mode in which the refrigerant, condensed by the first heat exchanger 21 , is introduced into the second heat exchanger 42 and performs heat exchange with the heat medium flowing along the second connection pipe 12 , with the result that the refrigerant is evaporated (S 700 ).
  • FIG. 5 is a view showing the construction of a heat pump 200 according to another embodiment of the present disclosure.
  • the heat pump 200 does not include the fourth heat exchanger 44 to perform heat exchange between the heat medium introduced through the second flow channel switching valve 46 disposed on the second connection pipe 12 and water flowing in the first heating pipe 61 included in the hot water supply device 60 .
  • the first heating pipe 61 directly communicates with the first connection pipe 11 and the second connection pipe 12 to transfer solar radiant heat collected by the solar heat collector 10 to the water tank 64 .
  • low-temperature solar radiant heat is used as an evaporation heat source of a refrigerant, thereby improving efficiency of the heat pump.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
US13/488,798 2011-06-10 2012-06-05 Heat pump and control method thereof Abandoned US20120312043A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2011-0055952 2011-06-10
KR1020110055952A KR20120136794A (ko) 2011-06-10 2011-06-10 히트펌프장치 및 히트펌프장치의 제어방법

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US (1) US20120312043A1 (fr)
EP (1) EP2532979A3 (fr)
KR (1) KR20120136794A (fr)
CN (1) CN102818397B (fr)

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US20120204587A1 (en) * 2009-10-21 2012-08-16 Dzsolar Ltd Temperature control system
US20150184889A1 (en) * 2014-01-02 2015-07-02 General Electric Company Water heater appliance and a method for operating a water heater appliance
US20170184329A1 (en) * 2014-09-04 2017-06-29 Korea Institute Of Energy Research Hybrid solar heat absorption cooling system
US11555617B2 (en) * 2017-02-08 2023-01-17 Grundfos Holding A/S Hydraulic unit for a heating or air-conditioning system

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CN106524588B (zh) * 2016-10-22 2021-04-02 刘雄 热泵空调设备
CN114264071B (zh) * 2021-12-22 2023-01-24 许昌佳宸热能科技有限公司 一种空气能和太阳能一体化热水及供暖装置
KR102716021B1 (ko) * 2024-01-09 2024-10-11 주식회사 디엠솔루텍 융복합 히트펌프시스템

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120204587A1 (en) * 2009-10-21 2012-08-16 Dzsolar Ltd Temperature control system
US9267713B2 (en) * 2009-10-21 2016-02-23 Dzsolar Ltd Temperature control system
USRE49075E1 (en) * 2009-10-21 2022-05-17 Dzsolar Ltd Temperature control system
US20150184889A1 (en) * 2014-01-02 2015-07-02 General Electric Company Water heater appliance and a method for operating a water heater appliance
US9541305B2 (en) * 2014-01-02 2017-01-10 Haier Us Appliance Solutions, Inc. Water heater appliance and a method for operating a water heater appliance
US20170184329A1 (en) * 2014-09-04 2017-06-29 Korea Institute Of Energy Research Hybrid solar heat absorption cooling system
US10337772B2 (en) * 2014-09-04 2019-07-02 Korea Institute Of Energy Research Hybrid solar heat absorption cooling system
US11555617B2 (en) * 2017-02-08 2023-01-17 Grundfos Holding A/S Hydraulic unit for a heating or air-conditioning system

Also Published As

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EP2532979A3 (fr) 2016-07-13
KR20120136794A (ko) 2012-12-20
EP2532979A2 (fr) 2012-12-12
CN102818397B (zh) 2016-06-08
CN102818397A (zh) 2012-12-12

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